Die-stock



(No Model.)

P. E. WELLS.

DIE STOCK.

No. 311,549. Patented Feb. 3, 1885.

wmesses:

W7KQ

fii /vemor represent the dies, and B the holder.

'NITED STATES FBEDERIG E. WELLS, OF GREENFIELD, MASSACHUSETTS.

DIE-STOCK.

SPECIFICATION forming part of Letters Patent No. 311,549, dated February3, 1885. 7

Application filed March 5, 1884. (N0 model.)

To all whom it may concern.-

Be it known that I, FREDERIO E. WELLS, of Greenfield, in the county ofFranklin and State of Massachusetts, have invented a new and ImprovedDie-Stock for Cutting Screw- Threads on Bolts, Pipe, or other Articles;and I do hereby declare that the following is a full and exactdescription thereof, reference being bad to the accompanying drawings,making part ofthis specification, similar letters of referenceindicating corresponding parts.

The object of my invention is to provide an adjustable die, which can bechanged in size to allow for a small difference in size or to allow forwear occasioned by use.

In the accompanying drawings, Figure 1 is a top view of the dies anddie-holder. A A Fig. 2 is a side sectional view through the center ofthe dies, die-ho1der, and guide G,for the bolts or article to bethreaded, also the adj ustingscrews D D. Fig. 3 is an end sectional viewof the dies, dieholder, and guide, through the center.

The dies A A are beveled on the edges, as shown in Fig. 3, the lowerpart being wider than the top. The die-holder has a rectangular openingthrough the top and is beveled to fit the dies. On the lower inside partof it it is cylindrical and has a screw-thread out in the The guide 0 isflat on top, has a hole same.

through it in the center for the work to pass through, and the outsideedge is threaded. to fit the screw-thread in the die-holder. The screwsD D are for the purpose of adjusting the dies. The dies A A being placedin the holder B from the under side, the guide 0 is screwed into theholder, with the top pressing against the under side of the dies. Thebevel on the dies and the corresponding bevel on the holder prevent thedies from going any higher than to fill the space in the holder, and theguide on the lower side holds both halves of the die securely'in placeand in line with each other, while the adjustingscrews hearing on theends of dies prevent the dies from moving backward, and the friction onthe dies, caused by the pressure of the guide and dieholder when screwedtogether, prevents them from moving toward each other.

WhatI claim as my invention, and desire to secure by Letters Patent ofthe United States, 1s-

The die-stock comprehending the dies A A, the die-holder B, and theguide 0, all constructed, arranged, and secured together, substantiallyas shown and described.

FREDERIO E. lVELLS.

Witnesses:

FRANK B. WHITNEY, Rnros A. LILLY.

